JPS52135746A - Optical system protector for optical device - Google Patents

Optical system protector for optical device

Info

Publication number
JPS52135746A
JPS52135746A JP5224876A JP5224876A JPS52135746A JP S52135746 A JPS52135746 A JP S52135746A JP 5224876 A JP5224876 A JP 5224876A JP 5224876 A JP5224876 A JP 5224876A JP S52135746 A JPS52135746 A JP S52135746A
Authority
JP
Japan
Prior art keywords
optical
system protector
optical system
optical device
protector
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP5224876A
Other languages
Japanese (ja)
Inventor
Toshihiro Takahashi
Yujiro Tatsuno
Akiichi Oota
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP5224876A priority Critical patent/JPS52135746A/en
Publication of JPS52135746A publication Critical patent/JPS52135746A/en
Pending legal-status Critical Current

Links

Landscapes

  • Lens Barrels (AREA)
  • Control Of Temperature (AREA)

Abstract

PURPOSE: To prevent breakage of a condenser lens due to temperature rise by detecting the temperature of a lamp cover to interrupt the power supply to the lamp.
COPYRIGHT: (C)1977,JPO&Japio
JP5224876A 1976-05-10 1976-05-10 Optical system protector for optical device Pending JPS52135746A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5224876A JPS52135746A (en) 1976-05-10 1976-05-10 Optical system protector for optical device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5224876A JPS52135746A (en) 1976-05-10 1976-05-10 Optical system protector for optical device

Publications (1)

Publication Number Publication Date
JPS52135746A true JPS52135746A (en) 1977-11-14

Family

ID=12909419

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5224876A Pending JPS52135746A (en) 1976-05-10 1976-05-10 Optical system protector for optical device

Country Status (1)

Country Link
JP (1) JPS52135746A (en)

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